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Exosomes in oncofertility: emerging roles in chemotherapy-induced reproductive damage and fertility preservation.

ABSTRACT: Oncofertility has emerged as a critical interdisciplinary field addressing the reproductive challenges faced by cancer patients, particularly those undergoing chemotherapy. While chemotherapeutic agents remain indispensable in cancer therapy, their gonadotoxic effects frequently result in diminished ovarian reserve, impaired spermatogenesis, and long-term infertility. Exosomes - small extracellular vesicles enriched with nucleic acids, proteins, and lipids - are increasingly recognized as key mediators of intercellular communication in both pathological and regenerative contexts. Rec

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… Impact of chemotherapeutic agents on female fertility Doxorubicin, an anthracycline antibiotic derived from Streptomyces peucetius and marketed as Adriamycin or Rubex, is a widely used chemotherapeutic for leukemia, breast, lung, stomach, and ovarian cancers ( Spears et al. 2019 ). …

Cardiotoxicity Induced by Anticancer Therapies: A Call for Integrated Cardio-Oncology Practice.

The introduction of novel oncologic therapies, including targeted agents, immunotherapies, and antibody-drug conjugates, has transformed the therapeutic landscape of cancer care. This evolution has resulted in a dual clinical scenario; while survival outcomes have markedly improved, leading to a growing population of long-term cancer survivors, an increasing incidence of previously unrecognized treatment-related toxicities has emerged. Among these, cardiovascular adverse events represent some of the most prevalent and clinically significant complications observed in both conventional chemother

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… Anthracyclines Anthracyclines, such as doxorubicin, daunorubicin, and epirubicin, are potent chemotherapeutic agents derived from Streptomyces species. …

Blockage of Autophagy for Cancer Therapy: A Comprehensive Review.

The incidence and mortality of cancer are increasing, making it a leading cause of death worldwide. Conventional treatments such as surgery, radiotherapy, and chemotherapy face significant limitations due to therapeutic resistance. Autophagy, a cellular self-degradation mechanism, plays a crucial role in cancer development, drug resistance, and treatment. This review investigates the potential of autophagy inhibition as a therapeutic strategy for cancer. A systematic search was conducted on Embase, PubMed, and Google Scholar databases from 1967 to 2024 to identify studies on autophagy inhibito

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… Bafilomycin A1(Baf A1) Baf A1 is a macrolide antibiotic isolated from Streptomyces griseus . It has a dual action by inhibiting vacuolar V-ATPase and interrupting the passage of proteins through the lysosomal membrane. …

Drug repurposing approach to fight COVID-19.

Currently, there are no treatment options available for the deadly contagious disease, coronavirus disease 2019 (COVID-19). Drug repurposing is a process of identifying new uses for approved or investigational drugs and it is considered as a very effective strategy for drug discovery as it involves less time and cost to find a therapeutic agent in comparison to the de novo drug discovery process. The present review will focus on the repurposing efficacy of the currently used drugs against COVID-19 and their mechanisms of action, pharmacokinetics, dosing, safety, and their future perspective. R

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… This drug is basically a macrolide endectocide macrocyclic lactone derived from Streptomyces avermitilis with anthelmintic activity (Table 2 ). Recently, this drug has been investigated against SARS-CoV2 in in-vitro cell culture system in Australia. …

Antibody-Drug Conjugates for Cancer Therapy.

Antibody-drug conjugates (ADCs) are novel drugs that exploit the specificity of a monoclonal antibody (mAb) to reach target antigens expressed on cancer cells for the delivery of a potent cytotoxic payload. ADCs provide a unique opportunity to deliver drugs to tumor cells while minimizing toxicity to normal tissue, achieving wider therapeutic windows and enhanced pharmacokinetic/pharmacodynamic properties. To date, nine ADCs have been approved by the FDA and more than 80 ADCs are under clinical development worldwide. In this paper, we provide an overview of the biology and chemistry of each co

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… The naturally occurring PBDs produced by actinomycetes Streptomyces and Micrococcus (e.g., anthramycin) form single alkylated DNA adducts by binding to guanine residues in the DNA minor groove. …

Targeting Histone Deacetylases: Opportunities for Cancer Treatment and Chemoprevention.

The dysregulation of gene expression is a critical event involved in all steps of tumorigenesis. Aberrant histone and non-histone acetylation modifications of gene expression due to the abnormal activation of histone deacetylases (HDAC) have been reported in hematologic and solid types of cancer. In this sense, the cancer-associated epigenetic alterations are promising targets for anticancer therapy and chemoprevention. HDAC inhibitors (HDACi) induce histone hyperacetylation within target proteins, altering cell cycle and proliferation, cell differentiation, and the regulation of cell death pr

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… In this sense, the Streptomyces hygroscopicus metabolite (TSA), described by Yoshida thirty years ago, remains one of the most potent available HDACi [ 52 , 79 ]. …

FDA-Approved Small Molecule Compounds as Drugs for Solid Cancers from Early 2011 to the End of 2021.

Solid cancers are the most common types of cancers diagnosed globally and comprise a large number of deaths each year. The main challenge currently in drug development for tumors raised from solid organs is to find more selective compounds, which exploit specific molecular targets. In this work, the small molecule drugs registered by the Food and Drug Administration (FDA) for solid cancers treatment between 2011 and 2022 were identified and analyzed by investigating a type of therapy they are used for, as well as their structures and mechanisms of action. On average, 4 new small molecule agent

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… Mitomycin (also known as mitomycin-C ) is an antibiotic isolated from Streptomyces caespitosus that was originally approved by the FDA on 29 November 1995 [ 240 ]. This compound is a bioreductive alkylating agent selective toward DNA. …

Comprehensive Review of Methodology to Detect Reactive Oxygen Species (ROS) in Mammalian Species and Establish Its Relationship with Antioxidants and Cancer.

Evidence suggests that reactive oxygen species (ROS) mediate tissue homeostasis, cellular signaling, differentiation, and survival. ROS and antioxidants exert both beneficial and harmful effects on cancer. ROS at different concentrations exhibit different functions. This creates necessity to understand the relation between ROS, antioxidants, and cancer, and methods for detection of ROS. This review highlights various sources and types of ROS, their tumorigenic and tumor prevention effects; types of antioxidants, their tumorigenic and tumor prevention effects; and abnormal ROS detoxification in

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… Some new molecules include meroxest (synthetic mero-sesquiterpene derivative of trans -communic acid that is obtained in plenty from Cupressus sempervirens ), and Jadomycin (synthesized by Streptomyces venezuelae ) [ 127 , 128 ]. …

Antibody-drug conjugates in cancer therapy: current advances and prospects for breakthroughs.

Antibody-drug conjugates (ADCs), often referred to as "intelligent biological missiles," have garnered significant attention in the rapidly evolving landscape of cancer therapy. ADCs represent a sophisticated approach by integrating monoclonal antibodies (mAbs), which are particular targeting tumor antigens, with cytotoxic payloads, which deliver lethal effects. Compared with the combination of chemotherapy and mAbs, ADCs precisely deliver highly potent cytotoxins directly to tumor cells while minimizing damage to healthy tissues. However, limitations such as significant adverse effects, subop

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… Calicheamicin Calicheamicin represents a class of DNA-targeting anti-tumor antibiotics derived from the fermentation product of Streptomyces platensis ( Lee et al., 1991 ). …

Why Is Wnt/β-Catenin Not Yet Targeted in Routine Cancer Care?

Despite significant progress in cancer prevention, screening, and treatment, the still limited number of therapeutic options is an obstacle towards increasing the cancer cure rate. In recent years, many efforts were put forth to develop therapeutics that selectively target different components of the oncogenic Wnt/β-catenin signaling pathway. These include small molecule inhibitors, antibodies, and more recently, gene-based approaches. Although some of them showed promising outcomes in clinical trials, the Wnt/β-catenin pathway is still not targeted in routine clinical practice for cancer mana

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… MMAE: Monomethyl Auristatin E; Aur0101: Auristatin Microtubule Inhibitor; PNU159682: DNA damaging topoisomerase-inhibiting anthracycline; (ABD)-PA: (Albumin Binding Domain)- Pseudomonas endotoxin A; ABD; DMSA: Streptomyces Duocarmycin [ 276 , 277 , 278 , 281 , 283 , 284 , 285 , 286 ]. 4. …

Antibody drug conjugate: the "biological missile" for targeted cancer therapy.

Antibody-drug conjugate (ADC) is typically composed of a monoclonal antibody (mAbs) covalently attached to a cytotoxic drug via a chemical linker. It combines both the advantages of highly specific targeting ability and highly potent killing effect to achieve accurate and efficient elimination of cancer cells, which has become one of the hotspots for the research and development of anticancer drugs. Since the first ADC, Mylotarg® (gemtuzumab ozogamicin), was approved in 2000 by the US Food and Drug Administration (FDA), there have been 14 ADCs received market approval so far worldwide. Moreove

Multi-omics tumor profiling technologies to develop precision medicine in multiple myeloma.

Multiple myeloma (MM), the second most common hematologic cancer, is caused by accumulation of aberrant plasma cells in the bone marrow. Its molecular causes are not fully understood and its great heterogeneity among patients complicates therapeutic decision-making. In the past decades, development of new therapies and drugs have significantly improved survival of MM patients. However, resistance to drugs and relapse remain the most common causes of mortality and are the major challenges to overcome. The advent of high throughput omics technologies capable of analyzing big amount of clinical a

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… Anthracyclines Anthracyclines are a class of drugs extracted from Streptomyces bacteria. Doxorubicin (also known as adriamycin) is the most relevant anthracycline in the treatment of MM. It acts as a DNA intercalating agent, inhibiting DNA replication and transcription. …

Prognostic and functional role of the nuclear export receptor 1 (XPO1) in gastrointestinal cancers: a potential novel target?

In the last decades the survival of metastatic gastrointestinal (GI) cancer patients could have been significantly extended due to the introduction of targeted- and immunotherapy. However, only the minority of patients will experience long-lasting survival. Hence, novel therapeutics are clearly necessary for GI cancer patients. Molecular high-throughput profiling techniques have revealed potential novel targetable molecular alterations, emphasizing the necessity for tailored therapeutic approaches. Nuclear export proteins, particularly Exportin-1 (XPO1), have emerged as promising targets in ca

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… Therapeutics targeting XPO1 The research involving the development of XPO1 inhibitors has started several decades ago, in the beginning of the 90’s when the antifungal antibiotic leptomycin B isolated from a strain of Streptomyces , was identified as a potential XPO1 inhibitor [ 64 ] that covalently …

Nanomaterials in gene therapy and genome editing: challenges and emerging directions.

Nanomaterials are redefining the landscape of gene and genome editing, yet their translation to clinical reality remains constrained by multiple unresolved challenges. While they provide structural and functional advantages for delivering nucleic acids and CRISPR/Cas systems across biological barriers, their behavior within living systems is often unpredictable, leading to issues such as off-target editing, immune activation, and inconsistent biodistribution. The design of nanocarriers, whether lipid-based, polymeric, inorganic, must therefore balance efficiency with safety, integrating physic

Repurposed Drugs in Gastric Cancer.

Gastric cancer (GC) is one of the major causes of death worldwide, ranking as the fifth most incident cancer in 2020 and the fourth leading cause of cancer mortality. The majority of GC patients are in an advanced stage at the time of diagnosis, presenting a poor prognosis and outcome. Current GC treatment approaches involve endoscopic detection, gastrectomy and chemotherapy or chemoradiotherapy in an adjuvant or neoadjuvant setting. Drug development approaches demand extreme effort to identify molecular mechanisms of action of new drug candidates. Drug repurposing is based on the research of

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… Rapamycin is a product from a bacterium, Streptomyces hygroscopicus. It inhibits the mTOR, a serine/threonine protein kinase, which is involved in cell cycle progression, cell proliferation, angiogenesis and metabolism [ 82 , 112 , 334 ]. …

Genus Sophora: a comprehensive review on secondary chemical metabolites and their biological aspects from past achievements to future perspectives.

Sophora is deemed as one of the most remarkable genera of Fabaceae, and the third largest family of flowering plants. The genus Sophora comprises approximately 52 species, 19 varieties, and 7 forms that are widely distributed in Asia and mildly in Africa. Sophora species are recognized to be substantial sources of broad spectrum biopertinent secondary metabolites namely flavonoids, isoflavonoids, chalcones, chromones, pterocarpans, coumarins, benzofuran derivatives, sterols, saponins (mainly triterpene glycosides), oligostilbenes, and mainly alkaloids. Meanwhile, extracts and isolated compoun

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Tumor biomarkers for diagnosis, prognosis and targeted therapy.

Tumor biomarkers, the substances which are produced by tumors or the body's responses to tumors during tumorigenesis and progression, have been demonstrated to possess critical and encouraging value in screening and early diagnosis, prognosis prediction, recurrence detection, and therapeutic efficacy monitoring of cancers. Over the past decades, continuous progress has been made in exploring and discovering novel, sensitive, specific, and accurate tumor biomarkers, which has significantly promoted personalized medicine and improved the outcomes of cancer patients, especially advances in molecu

Meeting abstracts from the 21st European Symposium on Radiopharmacy and Radiopharmaceuticals

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… The siderophore ferrioxamine E (synonyms: nocardamine, FOXE, DFO E), produced by Streptomyces sp., can be utilized by A. fumigatus [1]. …

Molecularly Targeted Therapies in Oncology: Mechanisms, Resistance, and Combination Strategies.

Targeted therapies are reshaping oncology by enabling treatment selection based on actionable molecular alterations, improving precision, and reducing unnecessary toxicity. This review provides an up-to-date overview of current targeted treatment modalities and the medicinal chemistry principles that support their discovery and optimization. We synthesize evidence on small-molecule and biologic strategies spanning receptor and non-receptor kinases and their major signaling axes (PI3K-AKT-mTOR and RAS-RAF-MEK-ERK), apoptosis regulation (BCL-2 family), DNA repair via poly(ADP-ribose) polymerase

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… Rapamycin Analogs (mTOR Inhibitors) Rapamycin analogs (so-called rapalogs), such as temsirolimus and everolimus , are semisynthetic derivatives of rapamycin ( sirolimus ), a macrolide lactone produced by Streptomyces hygroscopicus ( Scheme 10 ) [ 100 ]. …