Results 61 to 70 of about 9,914 (214)

CRISPR/Cas9‐mediated Genome‐editing Reveals 10 Testis‐enriched Genes and One Non‐testis‐enriched Gene are Dispensable for Male Fecundity in Mice

open access: yesAndrology, EarlyView.
ABSTRACT Background More than 1000 genes have been identified as predominantly expressed in the human testis. Advances in gene editing technologies have enabled the rapid and efficient generation of genetically engineered mice. This approach facilitates the screening of genes essential for spermatogenesis by analyzing knockout mouse models.
Yumiao Qiu   +2 more
wiley   +1 more source

Role for Adhesion Molecules in the Spermatogonial Stem Cell Niche [PDF]

open access: yes, 2008
In this issue of Cell Stem Cell, Kanatsu-Shinohara et al. (2008) show that β1-integrin participates in normal spermatogenesis and is required for spermatogonial stem cell (SSC) homing to the basal membrane niche.
van Pelt, Ans M. M.   +3 more
core   +1 more source

Spermatogonial Gene Networks Selectively Couple to Glutathione and Pentose Phosphate Metabolism but Not Cysteine Biosynthesis

open access: yesiScience, 2021
Summary: In adult males, spermatogonia maintain lifelong spermatozoa production for oocyte fertilization. To understand spermatogonial metabolism we compared gene profiles in rat spermatogonia to publicly available mouse, monkey, and human spermatogonial
David Prokai   +11 more
doaj   +1 more source

Sperm Telomere Interactions Are Impaired in Testicular Cancer Before and After Adjuvant Therapy

open access: yesAndrology, EarlyView.
ABSTRACT Background No study has yet explored telomere length or interaction in sperm nuclei of testicular cancer (TC) patients exposed to chemotherapy or radiotherapy. However, sperm telomere dynamics have emerged as a potential marker in male infertility.
Benoit Berby   +10 more
wiley   +1 more source

Seminal Plasma Exosomal miRNA Profiling Reveals hsa‐miR‐7‐5p as a Key Regulator of Sperm Motility in Asthenozoospermia

open access: yesAndrology, EarlyView.
ABSTRACT Background Asthenozoospermia is a significant contributing factor to male infertility. Accumulating evidence indicates that impaired sperm motility is closely linked to dysregulated microRNA expression during spermatogenesis. Seminal plasma exosomes are enriched with diverse microRNAs, which play pivotal roles in modulating sperm motility, the
Zhi‐Jian Zhu   +8 more
wiley   +1 more source

Effects of aging and niche microenvironment on spermatogonial stem cell self-renewal [PDF]

open access: yes, 2006
Aging is evident in most tissues and organ systems, but the mechanisms of aging are difficult to identify and poorly understood. Here, we test the hypothesis that aging results in uncorrected defects in stem cell and/or niche function, which lead to ...
Orwig, Kyle E   +4 more
core   +1 more source

T Cell Microenvironmental Impacts and Therapeutic Opportunities: Application to Human Testicular Germ Cell Tumors

open access: yesAndrology, EarlyView.
ABSTRACT Testicular germ cell tumors (TGCT) are the leading malignancy in adolescent and young adult males, yet the immunological and cellular mechanisms governing their tumor microenvironment (TME) remain poorly understood. Here, we present a comprehensive review of TGCT pathobiology with a focus on the immune landscape, particularly the role of tumor‐
R Islam   +7 more
wiley   +1 more source

Deriving bovine embryonic stem-like cells in defined conditions [PDF]

open access: yes, 2011
The first embryonic stem ES cell line was isolated from mouse in 1981 (Evans and Kaufman 1981; Martin1981). However, ESCs are only available in rodent species.
Muhammad Alahdal, Hadil   +1 more
core  

Mast4 knockout shows the regulation of spermatogonial stem cell self-renewal via the FGF2/ERM pathway [PDF]

open access: yes, 2021
Spermatogenesis is an important cellular differentiation process that produces the male gametes and remains active throughout the individual's lifespan. Sertoli cell-only syndrome (SCO) refers to the dysfunction of the male reproductive system, including
정한성, 김현이
core   +1 more source

A distinct expression pattern of cyclin K in mammalian testes suggests a functional role in spermatogenesis. [PDF]

open access: yesPLoS ONE, 2014
Germ cell and embryonic stem cells are inextricably linked in many aspects. Remarkably both can generate all somatic cell types in organisms. Yet the molecular regulation accounting for these similarities is not fully understood.
Xiaocong Xiang   +9 more
doaj   +1 more source

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