Mitochondria-Targeting Fluorescent Probes for Hydrogen Sulfide Detection and Imaging.

Hydrogen sulfide (HS) is a potent redox-active signaling molecule commonly dysregulated in disease states. The production of HS and its involvement in various pathological conditions associated with mitochondrial dysfunction has been extensively documented. During stress, cystathionine gamma-lyase and cystathionine beta-synthase enzymes residing in cytosol are copiously translocated into the mitochondria to boost HS production, confirming its pivotal role in mitochondrial activities.

The role of cystathionine β-synthase in cancer.

Cystathionine β-synthase (CBS) occupies a key position as the initiating and rate-limiting enzyme in the sulfur transfer pathway and plays a vital role in health and disease. CBS is responsible for regulating the metabolism of cysteine, the precursor of glutathione (GSH), an important antioxidant in the body. Additionally, CBS is one of the three enzymes that produce hydrogen sulfide (HS) in mammals through a variety of mechanisms.

Role of hydrogen sulfide-microRNA crosstalk in health and disease.

The mutual regulation between hydrogen sulfide (HS) and microRNA (miRNA) is involved in the development of many diseases, including cancer, cardiovascular disease, inflammatory disease, and high-risk pregnancy. Abnormal expressions of endogenous HS-producing enzyme and miRNA in tissues and cells often indicate the occurrence of diseases, so the maintenance of their normal levels in the body can mitigate damages caused by various factors. Many studies have found that HS can promote the migration, invasion, and proliferation of cancer cells by regulating the expression of miRNA, while many HS donors can inhibit cancer progression by interfering with the proliferation, apoptosis, cell cycle, metastasis, and angiogenesis of cancer cells.

Emerging roles of hydrogen sulfide in colorectal cancer.

Hydrogen sulfide (HS), an endogenous gasotransmitter, plays a key role in several critical physiological and pathological processes in vivo, including vasodilation, anti-infection, anti-tumor, anti-inflammation, and angiogenesis. In colorectal cancer (CRC), aberrant overexpression of HS-producing enzymes has been observed. Due to the important role of HS in the proliferation, growth, and death of cancer cells, HS can serve as a potential target for cancer therapy.

Role of gasotransmitters in necroptosis.

Gasotransmitters are endogenous gaseous signaling molecules that can freely pass through cell membranes and transmit signals between cells, playing multiple roles in cell signal transduction. Due to extensive and ongoing research in this field, we have successfully identified many gasotransmitters so far, among which nitric oxide, carbon monoxide, and hydrogen sulfide are best studied. Gasotransmitters are implicated in various diseases related to necroptosis, such as cardiovascular diseases, inflammation, ischemia-reperfusion, infectious diseases, and neurological diseases.

Exploring the impact of hydrogen sulfide on hematologic malignancies: A review.

Hydrogen sulfide (HS) is one of the three most crucial gaseous messengers in the body. The discovery of HS donors, coupled with its endogenous synthesis capability, has sparked hope for the treatment of hematologic malignancies. In the last decade, the investigation into the impact of HS has expanded, particularly within the fields of cardiovascular function, inflammation, infection, and neuromodulation.