MGC4618 antibody - N-terminal region (ARP34360_T100)
- Known as:
- MGC4618 (anti-) - N-terminal region (ARP34360_T100)
- Catalog number:
- arp34360_t100
- Product Quantity:
- USD
- Category:
- -
- Supplier:
- Aviva Systems Biology
- Gene target:
- MGC4618 antibody - N-terminal region (ARP34360_T100)
Related genes to: MGC4618 antibody - N-terminal region (ARP34360_T100)
- Gene:
- TMEM175 NIH gene
- Name:
- transmembrane protein 175
- Previous symbol:
- -
- Synonyms:
- MGC4618
- Chromosome:
- 4p16.3
- Locus Type:
- gene with protein product
- Date approved:
- 2006-08-29
- Date modifiied:
- 2015-09-29
Related products to: MGC4618 antibody - N-terminal region (ARP34360_T100)
Related articles to: MGC4618 antibody - N-terminal region (ARP34360_T100)
- Many age-related neurodegenerative disorders are marked by progressive defects in cellular energy metabolism and protein homeostasis that converge on mitochondrial and lysosomal dysfunction. TLDc domain-containing proteins, such as OXR1, NCOA7, and related family members, have emerged as crucial modulators of organellar physiology and cellular stress responses. Growing evidence indicates that TLDc proteins physically interact with vacuolar ATPases (V-ATPases) to modulate their assembly and catalytic activity, linking TLDc function directly to the maintenance of lysosomal and Golgi lumen pH. This organellar pH homeostasis, in turn, is fundamental to intracellular iron handling and metabolic regulation, processes essential for mitochondrial bioenergetics, lysosomal functions, and cellular viability. Lysosomes maintain an acidic lumen via V-ATPase proton pumping, counterbalanced by specific ion channels, including TMEM175. This acidic environment is required for ferric iron reduction and subsequent release into the cytosol; when acidification fails, cells develop cytosolic iron deficiency, mitochondrial defects, pseudohypoxia via HIF-1α activation, and inflammation. Conversely, iron flux from lysosomes to mitochondria depends on acidic conditions and direct organelle contact, as exemplified by BDH2-driven siderophore transport, a V-ATPase-dependent but not TLDc-regulated process, which supports mitochondrial bioenergetics and sustains lysosomal acidity. Iron and pH dysregulation synergize to drive ferroptosis, lipid peroxidation, and neurotoxicity. Emerging studies link lysosomal deacidification and iron dyshomeostasis to the pathogenesis of major neurodegenerative diseases. These mechanisms collectively shape neuronal resilience, survival, and aging trajectories. This review integrates recent insights into how TLDc proteins coordinate organellar pH regulation and iron homeostasis and discusses how disruption of these interconnected pathways contributes to age-related neurodegeneration. - Source: PubMed
Publication date: 2026/09/01
Ghufran Mohammad SajidSoni PriyankaThomas Bobby - Transmembrane protein 175 (TMEM175) is a lysosomal proton-activated and proton-selective channel critical for regulating lysosomal membrane potential and acidity. However, its role in cardiomyocyte physiological and stress response remains unclear. Here, we investigated the function of TMEM175 in mitochondrial homeostasis using H9c2 cardiomyocytes and neonatal rat ventricular myocytes (NRVMs) under physiological conditions and during hydrogen peroxide (HO)-induced oxidative stress. Under physiological conditions, genetic knockout of TMEM175 impaired mitochondrial respiration, reduced mitochondrial superoxide, and attenuated autophagic clearance. In contrast, under HO-induced stress, TMEM175 deletion significantly alleviated mitochondrial dysfunction and cell death, despite autophagic flux being primarily stalled at the degradation stage. Mechanistically, TMEM175 deficiency activated AMP-activated protein kinase (AMPK), and silencing AMPK reversed the cytoprotective effects of TMEM175 deletion against HO injury. Pharmacological inhibition of TMEM175 with 2-phenylpyridin-4-ylamine (2-PPA) in H9c2 and NRVMs recapitulated key phenotypes observed in genetic knockout models. Furthermore, 2-PPA improved cardiac function and attenuated histopathological injury in myocardial infarction mice. Together, these findings reveal a dual role for TMEM175: it maintains lysosomal-mitochondrial communication under basal conditions, yet its inhibition protects against oxidative stress primarily through AMPK activation. This study identifies TMEM175 as a novel lysosomal regulator of cardiac mitochondrial resilience and highlights its potential role in the cellular response to oxidative injury in cardiomyocytes. - Source: PubMed
Publication date: 2026/08/18
Li QingliuHu NanZhao LimeiZhang ShaoxuanMeng LuluZhou JinyuLi QiujieLei FuchengYang XiaotongHu MeiqinZhu HuaHang PengzhouZhao Jing - Microglia, the resident immune cells of the central nervous system (CNS), maintain brain homeostasis and respond to pathological insults. Microglial dysfunction has been implicated in the pathogenesis of several neurodegenerative diseases, including Alzheimer's disease, Parkinson's disease, and multiple sclerosis. Impaired lysosomal function, particularly defective lysosomal acidification, leads to the accumulation of undegraded material, thereby promoting neuroinflammation and neuronal damage. - Source: PubMed
Publication date: 2026/08/03
Jaganathan RavindranVijayakumar SrilakshmiChen YinchiYe JiaxiBakthavatchalam PugazhandhiWankhar DapkuparYang ChuanbinIyaswamy AshokLi Min - The transmembrane protein 175 (TMEM175) is a high-risk gene for Parkinson's disease (PD) and encodes an ion channel in lysosomes. Many PD-associated variants in TMEM175 lead to the loss of ion channel function. In this study, we identified the PD-associated TMEM175-L156P variant is a missense mutation with trafficking deficiency. Using imaging, biochemical, and whole-endolysosomal electrophysiological approaches, we identified that L156P abolished the lysosomal expression of TMEM175; instead, it accumulates in the endoplasmic reticulum (ER). The cytosolic segment of the fourth transmembrane helix (TM4-1), where the L156 resides, determined the lysosomal localization of TMEM175. Having understood the structural basis, we evaluated wild-type (WT) TMEM175 and pharmacological chaperones previously used in cystic fibrosis treatment. We elucidated that WT partially rescued the aberrant expression of L156P. Moreover, the chaperones substantially reduced the ER-retained L156P and facilitated its trafficking to lysosomes. We further screened and identified a bifunctional chemical molecule that both corrected the trafficking defects and potentiated the ion channel function of L156P. Notably, the chemical-restored L156P is functional, as it relieves the lysosomal over-acidification. Conclusively, we establish the relationship between aberrant trafficking and pathogenesis in PD, demonstrating the potential of utilizing "chaperone plus agonist" bifunctional chemical molecules as personalized treatment for PD. - Source: PubMed
Publication date: 2026/07/31
Luo TingHe YuLi ShuyaoGuan HaoyuCui RuiliShi YuJiang ZhongwenWang SiyuLi XuanLi JiyuanHu MeiZhou YupengTang BeishaZhang YanyanGao ZhaobingZhou YuLiu ZhenhuaLi Ping - Alzheimer's disease (AD), Parkinson's disease (PD) and Lewy body dementia (LBD) overlap clinically, pathologically and genetically, complicating interpretation of cross-disorder genome-wide association study (GWAS) signals. - Source: PubMed
Publication date: 2026/07/02
Zhang YingZhang ZhishuaiQiu ShizhengHu Yang